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<a name="1" href="#1">1</a>   <strong class="jxr_keyword">package</strong> org.slf4j.migrator.helper;
<a name="2" href="#2">2</a>   
<a name="3" href="#3">3</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/slf4j/migrator/helper/Abbreviator.html">Abbreviator</a> {
<a name="4" href="#4">4</a>     <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String FILLER = <span class="jxr_string">"..."</span>;
<a name="5" href="#5">5</a>   
<a name="6" href="#6">6</a>     <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">char</strong> folderSeparator;
<a name="7" href="#7">7</a>     <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> invariantPrefixLength;
<a name="8" href="#8">8</a>     <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> desiredLength;
<a name="9" href="#9">9</a>   
<a name="10" href="#10">10</a>    <strong class="jxr_keyword">public</strong> <a href="../../../../org/slf4j/migrator/helper/Abbreviator.html">Abbreviator</a>(<strong class="jxr_keyword">int</strong> invariantPrefixLength, <strong class="jxr_keyword">int</strong> desiredLength,
<a name="11" href="#11">11</a>        <strong class="jxr_keyword">char</strong> folderSeparator) {
<a name="12" href="#12">12</a>      <strong class="jxr_keyword">this</strong>.invariantPrefixLength = invariantPrefixLength;
<a name="13" href="#13">13</a>      <strong class="jxr_keyword">this</strong>.desiredLength = desiredLength;
<a name="14" href="#14">14</a>      <strong class="jxr_keyword">this</strong>.folderSeparator = folderSeparator;
<a name="15" href="#15">15</a>    }
<a name="16" href="#16">16</a>  
<a name="17" href="#17">17</a>    <strong class="jxr_keyword">public</strong> String abbreviate(String filename) {
<a name="18" href="#18">18</a>      <strong class="jxr_keyword">if</strong> (filename.length() &lt;= desiredLength) {
<a name="19" href="#19">19</a>        <strong class="jxr_keyword">return</strong> filename;
<a name="20" href="#20">20</a>      } <strong class="jxr_keyword">else</strong> {
<a name="21" href="#21">21</a>  
<a name="22" href="#22">22</a>        <strong class="jxr_keyword">int</strong> firstIndex = filename.indexOf(folderSeparator, invariantPrefixLength);
<a name="23" href="#23">23</a>        <strong class="jxr_keyword">if</strong> (firstIndex == -1) {
<a name="24" href="#24">24</a>          <em class="jxr_comment">// we cant't process this string</em>
<a name="25" href="#25">25</a>          <strong class="jxr_keyword">return</strong> filename;
<a name="26" href="#26">26</a>        }
<a name="27" href="#27">27</a>        StringBuffer buf = <strong class="jxr_keyword">new</strong> StringBuffer(desiredLength);
<a name="28" href="#28">28</a>        buf.append(filename.substring(0, firstIndex + 1));
<a name="29" href="#29">29</a>        buf.append(FILLER);
<a name="30" href="#30">30</a>        <strong class="jxr_keyword">int</strong> nextIndex = computeNextIndex(filename, firstIndex);
<a name="31" href="#31">31</a>        <strong class="jxr_keyword">if</strong> (nextIndex != -1) {
<a name="32" href="#32">32</a>          buf.append(filename.substring(nextIndex));
<a name="33" href="#33">33</a>        } <strong class="jxr_keyword">else</strong> {
<a name="34" href="#34">34</a>          <em class="jxr_comment">// better long than wrong</em>
<a name="35" href="#35">35</a>          <strong class="jxr_keyword">return</strong> filename;
<a name="36" href="#36">36</a>        }
<a name="37" href="#37">37</a>  
<a name="38" href="#38">38</a>        <strong class="jxr_keyword">if</strong> (buf.length() &lt; filename.length()) {
<a name="39" href="#39">39</a>          <strong class="jxr_keyword">return</strong> buf.toString();
<a name="40" href="#40">40</a>        } <strong class="jxr_keyword">else</strong> {
<a name="41" href="#41">41</a>          <em class="jxr_comment">// we tried our best but we are still could not shorten the input</em>
<a name="42" href="#42">42</a>          <strong class="jxr_keyword">return</strong> filename;
<a name="43" href="#43">43</a>        }
<a name="44" href="#44">44</a>      }
<a name="45" href="#45">45</a>    }
<a name="46" href="#46">46</a>  
<a name="47" href="#47">47</a>    <strong class="jxr_keyword">int</strong> computeNextIndex(String filename, <strong class="jxr_keyword">int</strong> firstIndex) {
<a name="48" href="#48">48</a>      <strong class="jxr_keyword">int</strong> nextIndex = firstIndex + 1;
<a name="49" href="#49">49</a>      <strong class="jxr_keyword">int</strong> hitCount = 0;
<a name="50" href="#50">50</a>      <strong class="jxr_keyword">int</strong> minToRemove = filename.length() - desiredLength + FILLER.length();
<a name="51" href="#51">51</a>      <strong class="jxr_keyword">while</strong> (nextIndex &lt; firstIndex + minToRemove) {
<a name="52" href="#52">52</a>        <strong class="jxr_keyword">int</strong> tmpIndex = filename.indexOf(folderSeparator, nextIndex + 1);
<a name="53" href="#53">53</a>        <strong class="jxr_keyword">if</strong> (tmpIndex == -1) {
<a name="54" href="#54">54</a>          <strong class="jxr_keyword">if</strong> (hitCount == 0) {
<a name="55" href="#55">55</a>            <strong class="jxr_keyword">return</strong> -1;
<a name="56" href="#56">56</a>          } <strong class="jxr_keyword">else</strong> {
<a name="57" href="#57">57</a>            <strong class="jxr_keyword">return</strong> nextIndex;
<a name="58" href="#58">58</a>          }
<a name="59" href="#59">59</a>        } <strong class="jxr_keyword">else</strong> {
<a name="60" href="#60">60</a>          hitCount++;
<a name="61" href="#61">61</a>          nextIndex = tmpIndex;
<a name="62" href="#62">62</a>        }
<a name="63" href="#63">63</a>      }
<a name="64" href="#64">64</a>      <strong class="jxr_keyword">return</strong> nextIndex;
<a name="65" href="#65">65</a>    }
<a name="66" href="#66">66</a>  }
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